Engineering Mechanics - Set 01

Practice Test: Question Set - 01

1. A body of
mass ‘m’ moving with a constant velocity ‘v’ strikes
another body of same mass moving with same velocity but in opposite
direction. The common velocity of both the bodies after collision is

(A) v

(B) 2v

(C) 4v

(D) 8v

Answer: Option B

2. The bellow
figure shows the three coplanar forces P, Q and R acting
at a point O. If these forces are in equilibrium, then

(A) P/sin β =
Q/sin α = R/sin ɣ

(B) P/sin α =
Q/sin β = R/sin ɣ

(C) P/sin ɣ =
Q/sin α = R/sin β

(D) P/sin α =
Q/sin ɣ = R/sin β

Answer: Option B

3. The centre of percussion of the homogeneous
rod of length ‘L’ suspended at the top will be

(A) L/2

(B) L/3

(C) 3L/4

(D) 2L/3

Answer: Option D

4. The angle of
inclination of the plane at which the body begins to move down the plane, is
called